This IBM logo is constructed of the number 13 and the letter M.
The M is the 13th letter of the English alphabet, and represents the primordial waters of creation: Mare, Mother or… Matter! IBM uses blue (color of water!) for emphasizing this feminine, materialistic and magnetic aspect of the brand. Everything is there to attract you to their products.
And the lines? They are there to encourage you to read between the lines more often!
Matthew 13 : 13
Please know that letters and numbers in logo design hide more than you would ever suspect. And if you are interested in such a logo design for your company, I can help.